Where: New York (44.6° N, 73.4° W: paleocoordinates 28.1° S, 54.8° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Crown Point Formation (Chazy Group), Chazyan (470.0 - 457.3 Ma)
• "trilobite layer = middle Chazy", in Raymond (1916)
• group of beds-level stratigraphic resolution
Environment/lithology: reef, buildup or bioherm; lithified lime mudstone and limestone
Size classes: macrofossils, mesofossils
Primary reference: P. E. Raymond. 1916. The Pelecypoda of the Chazy Formation. Annals of the Carnegie Museum 328:325-343 [B. Kröger/B. Kröger]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 171704: authorized by Björn Kröger, entered by Björn Kröger on 17.07.2015
Creative Commons license: CC BY (attribution)
Taxonomic list
Trilobita | |
| |
"Isotelus canalis" = Isoteloides canalis3
| |
| |
"Illaenus incertus" = Eastonillaenus incertus3
| |
Cephalopoda | |
Gonioceras chaziense1 Ruedemann 1906 | |
Gastropoda | |
| |
Tergomya | |
Scenella robusta2 Raymond 1905 | |
Bivalvia | |
Ctenodonta peracuta Raymond 1905 clam | |
Whiteavsia expansa Raymond 1906 clam | |
"Clionychia montrealensis" = Cleionychia montrealensis, "Ambonychia curvata" = Ambonychiopsis curvata
"Clionychia montrealensis" = Cleionychia montrealensis Billings 1859 clam
"Ambonychia curvata" = Ambonychiopsis curvata Raymond 1905 clam | |
Cyrtodonta scala Raymond 1906 clam | |
Endodesma tranceps Raymond 1916 clam | |
Rhynchonellata | |
Orthis perveta3 Conrad 1843 | |
"Hebertella borealis" = Mimella borealis3
"Hebertella borealis" = Mimella borealis3 Billings 1859 | |
"Zygospira acutirostris" = Sphenotreta acutirostris4
"Zygospira acutirostris" = Sphenotreta acutirostris4 Hall 1847 | |
Strophomenata | |
"Rafinesquina incrassata" = Dactylogonia incrassata3
"Rafinesquina incrassata" = Dactylogonia incrassata3 Hall 1847 |